Compact Wastewater Flotation Unit with Release Device for Paper Mill Effluent

A1: DAF uses microbubbles to float light particles such as oil, grease, and algae to the surface, while sedimentation relies on gravity for heavy particles. DAF achieves over 95% oil removal and over 90% SS removal with 40% less footprint, making it far more effective for removing lightweight suspended solids and emulsified oils.

A2: Typically PAC (coagulant) and PAM (flocculant) are dosed before the DAF unit to form larger flocs that attach more easily to microbubbles. Dosage depends on wastewater characteristics and is determined by jar testing prior to system design.

A3: Yes. HONCO DAF systems can reduce oil content from below 500 mg/L to below 10 mg/L, achieving over 95% oil and grease removal rate. It is widely used in oil refining, food processing, and electroplating industries.

A4: HONCO DAF generates microbubbles of 20-40 micrometers in diameter. Smaller bubbles provide larger contact surface area with pollutants, resulting in stronger adhesion and higher flotation efficiency compared to conventional larger bubble systems.

A5: Yes. The carbon steel body with multi-layer anti-corrosion coating (epoxy inner layer plus polyurethane topcoat) is suitable for both indoor and outdoor installation. Optional weatherproof walkway and cover are available for harsh environments.